Switch



Feb. 26, 1929. 1,703,394

A. H. HARDMAN SWITCH Filed April 1, 1927 l, attorney i Patented Feb. 26,1929.

UNITED STATES ALBERT H. HARDE/IAN, OF VHEELNG, VIRGINIA.

SWIT CH.

Original application filed August 26, 1926, Serial No. 131,71. Dividedand this application filed April 1, 1927.

The present invention is directed to inl-r provements in switches and isa division ot my copending application for signals for autoindoilesTfiled August Q6, 1926, Serial No. la (i8.

The primary ohject of this invent ion is to provide a novel constructionot Jitch actuated through the movement et the service bralle pedal toolie/ct closing et circuit through the ii ht bulli which is toilhnniuate the stop signa casing.

In the accompanying draining:

Figure 1 is a sectional View through a i tion ot an automobile showingthe sv-:itcl in place thereon.

Figure 2 is a longitudinal sectional View through the switch.

Figure is a sectional View on line 3 3 ot Figure 2.

The switch is constructed in such manner that a light bulb willbeilluiniinited from actuationnot the brake pedal in order to display astop signal carried by a casing 1 mounted upon the rear ot theautomobile. The switch is mounted at any convenient point, as forexample, beneath the floor boards and service brake pedal 17 the floorboards being indicated by the numeral 8, The switch comprises a cas'ng isaving a base flange 5 at open side, and a closure iliiate 6 disposedagainst said side ot the casand against said liaiige and has flangessich are overturned about the margins e tlange 5. The casing and closureare made heet metal and by bending bach any one of the il; es 7 theclosure may be .slid out ot ouincement with the flange so as to 'peru it:wee L; to the interior ot the casing. d, its slee oiliposite its open.side the casing is Yformed with an opening 8, and plates S) and 10 otinsulating material are arranged respectively against the inner andouter sides of this Wall ol' the casing.

A threaded contact post 11 is litted through openings in the saidinsulating plates 9 and 10 and is provided at its ends Within the casingwith a head 12 and has threaded onto it mits 13 one oit which is to hetightened to bear against the plates 107 the head 12 engaging vthe otherplate so as to anchor said i iost, and, at the same time, connect theplates 9 and 10 and clamp them to the WalLo the casing at thecorresponding end of the opening 8, the other nut being adapted to betightened to bind the post to a conductor wire. A binding post 13 isiitted through openings in the insulating plates 9 and 10 and has nuts1e threaded thereon to secure the san'ie in paee and. draw the saidplates tofroth/er at `heir other ends, as well as to aniotner conducorwire, and this bindout oi contact iereon. ami a spring 2O is arrangedV-in and hears at one end against l. iwal et the casing and at its otherseid head. The end ot the stem {tends through the last mentioned endirai. he casing is provided with an eye 21, and a spring is connected atone end to sail eye and at its other end to a rod 23 rich leads to aclamp 2li secured upon the Q5 which leads from the service brake l l 2to the service brame ier the rear 1vih-els et the Vehicle. The head 18is norllv located substantially out of Contact be evident reference toFigure 2, that when is exerted upon the stem 16 toward Y in said ligure,and which pull will ated 'when the service hrake pedal is to apply thelira te, the head 18 will he contare and cause the same o contact withthe h .r ot the post l1` thus cloiii'ig the rirruii ii which this postand the binding post are hicated, and'will therelry illuinii ate thehull) in the stop casing 1. A

rilhe binding posts 11 and 13 are in circuit with the battery 2G andstop signal casing 1 through the conducting Wires QT and 28 vin orderthat when the service brake pedal 2 is actuated the circuit will heclosed to illuminate the bulb in said ca sing.

THaving thus described the invention7 I clai n z A mechanically operatedswitch comprising a casing, a stem slidably mounted therein and lia-'ingan eye upon its 'forward end for the connection oi' the mechanicaloperating means, a. head of insulating material carried by the stem7 thecasing having an open side,

the leaiiv spring Contact 15 but, it will y a plate of insulatingmaferial at said side of lche casing, spaced binding posts'upon Saidplate for the connection of conductor Wiree, a resilient leaf Contactsecured at one end by one of said posts and having its other enddeflected and located opposite the other post and normally spacedtherefrom and located in the path of movement of said head, and a springupon the Stem engaging at one end against one end of the casing and atits other end against the head and normally holding the stem in inactiveposition with relation to, said lealJ eonlact, said eye when engagedwith an end Wall of the. easing serving to limit the rearward movementof the stem..

Tn teetimony Whereol I allie; my Signature.

ALBERTH. HARDMAN. [L Sg

